1406 papers
This study utilizes multi-survey light curves and infrared data to demonstrate that the variable mean magnitudes observed in approximately 0.9% of RR Lyrae stars in the Galactic bulge are genuine astrophysical phenomena, likely caused by variable dust extinction rather than photometric errors.
By combining cold plasma experiments and photochemical modeling on H2-rich gas mixtures, this study demonstrates that out-of-equilibrium chemistry in temperate exoplanet atmospheres drives the formation of diverse organic species, with production efficiency and chemical complexity heavily dependent on the C/O ratio and the balance between methane and oxidized carbon sources.
This paper proposes that magnetic fields spreading diffusively from stellar and galactic dynamos into their turbulent, poorly conducting exteriors form confined magnetospheres with distinct decay properties and expansion dynamics that differ from standard potential or force-free models, thereby ruling out such fields as the source of intergalactic void magnetization.
This paper explores the physics of nanohertz gravitational wave signals recently detected by pulsar timing arrays, examining their potential astrophysical origins from massive black-hole binaries and cosmological origins from early Universe phenomena to constrain high-energy physics and deepen our understanding of the cosmos.
This paper proposes and validates a double-aperture photometry strategy as a computationally efficient alternative to on-board centroid shifts for detecting false positives in the PLATO mission, demonstrating that secondary flux measurements achieve the highest detection efficiency (92%) for rejecting eclipsing binary contaminants among Sun-like stars.
By combining high-resolution LOFAR-VLBI, uGMRT, and VLA multi-frequency data, this study reveals the complex spectral, morphological, and polarized properties of filaments in the merging galaxy cluster Abell 2255, identifying steep-spectrum extensions up to 250 kpc and highlighting the Original TRG as the primary driver of these structures.
This study utilizes JWST and HST observations to reveal that a young, in-situ formed star cluster within a tidal bridge of an interacting galaxy pair at z=3 exhibits a high Lyman-continuum escape fraction of 57%, suggesting that such tidal features play a crucial role in facilitating ionizing radiation escape and shaping the diversity of Lyman-continuum emitters at Cosmic Noon.
By applying hydrodynamically-consistent PoWR-HD modeling and Gaia DR3 parallaxes to a sample of six Galactic WN4b stars, this study resolves parameter degeneracies inherent in traditional grid-based analyses to reveal a narrow temperature range, confirm the existence of low-luminosity Wolf-Rayet stars, and identify distinct mass-loss characteristics compared to WN2 stars.
This study presents the first self-consistent 3D MHD simulation demonstrating that decayless kink oscillations in solar coronal loops emerge spontaneously with linear polarization, suggesting a self-sustained driver rather than a stochastic source.
By combining L-band spectra of 15 backlit young stellar objects in the Central Molecular Zone with multi-wavelength data, this study reveals an ensemble-averaged methanol ice abundance profile that is systematically lower than in the Galactic disk and increases from the inner to outer envelope regions, likely due to the sublimation of methanol ice caused by intense heating from massive protostars.
Using deep Arecibo and optical survey data, the study reveals that the Ultra Diffuse Galaxy VCC 1964 exhibits a significant 9 kpc offset between its gas and stellar components and a potential dark matter deficit, suggesting it is a field UDG undergoing its first ram-pressure stripping event as it enters a galaxy cluster.
This paper demonstrates that incorporating weak lensing into bright standard siren analyses enables the measurement of the matter perturbation parameter , with future observatories like the Einstein Telescope and LISA potentially achieving 10% and 30% accuracy, respectively, given sufficient populations of neutron star and massive black hole binaries with electromagnetic counterparts.
This paper proposes that primordial black holes (PBHs) as macroscopic dark matter, which begin clustering before matter-radiation equality and lose mass via Hawking radiation, can simultaneously explain the unexpectedly high cosmic microwave dipole and galaxy bulk flows while reducing the Hubble tension by altering the early universe's sound horizon.
The MUSE-ALMA Haloes survey significantly expands the sample of HI-selected galaxies at by doubling the number of CO detections, revealing a dual star formation efficiency where low-mass systems follow main-sequence relations while high-mass systems exhibit suppressed activity, thereby offering crucial insights into the baryon census and galaxy evolution at this redshift.
This study introduces a physically motivated mass-loss prescription for Eddington-limit induced ejections in 1D stellar evolution codes, demonstrating that incorporating this mechanism into single and binary models successfully reconciles theoretical predictions with observed massive star populations in the Magellanic Clouds, including their luminosity limits, evolutionary stages, and binary fractions.
Using 3D radiative magnetohydrodynamic simulations of collapsing cores, this study demonstrates that anisotropic, streamer-fed accretion driven by magnetic fields and turbulence not only facilitates rapid disk spreading but also continuously generates and sustains significant eccentricity () in Class 0 protoplanetary disks, with profound implications for planet formation and cosmochemistry.
Using a stacked sample of 3,496 galaxy clusters from ACT-DR4 and DR6 data, this study demonstrates that while four different pressure profile models (gNFW, -model, polytropic, and exponential) fit the observed Sunyaev-Zel'dovich signals equally well, residual trends and scatter prevent the assumption of a truly universal pressure profile, particularly for high-precision applications.
This study utilizes ALMA and HST observations to reveal that while unresolved beam-sized analyses of 27 local LIRGs suggest a dual star formation relation, resolving individual molecular gas clumps uncovers a single, universal trend where star formation efficiency increases and becomes self-gravity regulated as mergers progress from early to late stages.
Using high-resolution CO(2-1) observations from PHANGS-ALMA, this study characterizes the molecular gas content and star formation rates of 20 central rings in nearby galaxies, revealing that while their absolute properties vary with host galaxy characteristics, their relative contributions to global gas and star formation closely resemble those of the Milky Way's Central Molecular Zone, suggesting universal physical processes govern these structures.
Using three-dimensional hydrodynamical simulations, this study reveals that the thermal balance between heating and cooling in disk-embedded planets creates three distinct envelope regimes, where intermediate cooling rates form a radiative layer that traps volatiles while slow cooling in inner disks leads to fully convective envelopes that stall super-Earth growth and deplete volatiles.